These videos present the capabilities of the Audelight Controller on a Christmas tree with a string of 100 WS2801 LEDs. The controller has a built-in microphone that analyzes the music in real time and controls the LEDs. The music is played at normal volume in the room, in this instance via a Sonos Player 3 nearby. The controller can control up to 400 LEDs. In all these modes, the response is independent of the volume of the music. We play a variety of music types to show how the algorithm responds well to music with high beat content as well as very little. It mimics the way the human ear interprets sounds to get a very pleasant visual response.

The controller separates the music in 4 independent channels. Each channel is mapped to 4 LEDs, repeating every 16. The light intensity is proportional to every channel and computed in real time. The colors changes slowly rotating through the RGB colorwheel.

In this example, the controller maps the LED to and RGB rainbow. The rainbow speed of change is proportional to the amount of beat in the music.

In the sparkle mode, the controller randomly turns on the LEDs. The rate at which it turns them on is proportional to the beat. The decay rate of the LEDs gives an incandescent feel. The colors rotate through the RGB colorwheel.

This 16x16 (256) LED array shows the various modes of the controller. It is easier to see the patterns of the rainbow, spectrum and dance mode. The LEDs are masked by a sheet of white paper to dim the intensity.

The controller is approximately 2" x 1" on two layer board. It operates from 5.5V down to 3.0V and can work off a USB power supply or a single cell Li-Ion battery.